Answers for "count by group"

sql count group by

SELECT gender, COUNT(*) FROM people GROUP BY gender;

Posted by: Guest on April-21-2021

how to get count by using group by in python

df[['col1', 'col2', 'col3', 'col4']].groupby(['col1', 'col2']).agg(['mean', 'count'])

Posted by: Guest on November-20-2020

Code answers related to "count by group"